Iron Chelates

David Hershey dh321 at
Tue Dec 19 23:09:42 EST 2000

Sequestrene 330 is Fe-DTPA and contains 10% iron according to the 
manufacturer, Becker-Underwood.

Sequestrene 138 is Fe-EDDHA and contains 6% iron.

The Merck Index would probably give the chemical formulas.

Here's info from the manufacturer:

David Hershey dh321 at

>===== Original Message From c_pike at ACAD.FANDM.EDU (Carl Pike) =====
>Does anyone know the formulas for the Iron-Sequestrene compounds
>(Sequestrene 330 and Sequestrene 138).  I am actually using FeNaEDTA
>in my nutrient solutions, but the recipes I have refer to the
>Sequestrenes, so I need to translate from mg/liter of those products.

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